Dead Tank Circuit Breaker for 245 kV / 63 kA
GE’s DT series of dead tank circuit breakers are characterized by advanced self-blast interrupters, leak-resistant, cast aluminum single piece enclosures and durable, low-energy spring-operated mechanisms. More than 120,000 circuit breakers with self-blast interrupters and FK spring-operated mechanisms have been in service since 1989.
The DT1-245P 63 is available for single pole or for the three-pole gang operation. By utilizing tank heaters, the DT1-245P 63 can be installed in regions with temperatures as low as -60 °C. The interrupter chamber technology utilizes GE’s self-blast principle which is field proven with over 30 years of service experience. This proven technology dramatically reduces the mechanical stress in the chamber, enabling a higher interrupting capability with a lower operational energy requirement.
The reduced energy requirements within the breaking chamber allows for the utilization of GE’s world class FK spring-spring mechanism. The combination of the proven FK drive mechanism and interrupter technology results in a significant reduction of reaction forces, thereby reducing foundation design requirements.
SF6-Gas Tightness Guarantee
GE is a leader in the industry in SF6 gas tightness testing technology including seals, castings, and plumbing systems. Each breaker is factory tested using GE’s proprietary gas tightness testing system which provides measurable, quantifiable test results on the breaker in its fully assembled, as-shipped condition.
GE designs, manufactures, tests and delivers its circuit breakers in accordance with the latest IEEE/ANSI and IEC standards, maintaining a quality assurance system according to ISO 9011 and ISO 14001 certifications.
Superior Manufacturing & Domestic Content
The center of excellence for dead tank circuit breakers is located in Charleroi, PA (USA), where dead tank circuit breakers up to 550 kV and live tank circuit breakers up to 800 kV are assembled. The production lines feature high degree of domestic content, which can help to facilitate compliance with national requirements. In addition, the complete wiring and assembling of low voltage control cabinets and mechanism cabinets is done locally, resulting in greater flexibility to respond to utility needs.
Simplified Installation and Maintenance
The DT1-245P 63 model is factory tested and prepared for shipment with bushings assembled and pre-filled with SF6 gas. As a result, the on-site installation requires only a few simple steps without requiring any special tools. The DT1-245P 63 circuit breaker range has lower maintenance costs and requirements owing to an engineering and design philosophy that has focused on these key needs since the inception of the development process.
|Rated maximum voltage||Rated Voltage||245||kV|
|Rated power frequency||Rated frequency||60/50||Hz|
|Dry withstand||At power frequency dry||425/460||kV
|Rated Lighning impulse withstand voltage||At lighting impulse||900/1,050||kV|
|Rated chopped wave impulse voltage 2 µs.||1,160||kV|
|Rated continuous current||
Rated normal current
|Rated short-circuit current||Rated short-circuit breaking current||63||kA|
|Rated closing, latching and short time carrying||164||kA|
|Rated short-circuit making current||164||kA|
|Rated capacitance switching*|
|Rated Interrupting time||2/3||cycles|
|Rated break time||33/50||ms|
|Rated standard operating duty||0-0,3s-CO-15s-CO|
|Ambient temperature range*||-30 +40||degree C|
|Seismic withstand in accordance with IEEE 693-2018|
|Closing resistor (optional)*|
|Weight (without current transformers)||8,015/3,643 (GO) and 8,894/4,043 (IPO)||lbs/kg|
|Weight of SF6||143/65||lbs/kg|
Three-pole gang operation
Independent pole operation